Do u know if a rear shock off a cbr 600rr will fit straight into the rear of an nc30
Thanks

No need to post the same question more than once.

The answer is no.

The only things that drop right in as far as im aware are shocks specifcally designed for the NC30 bike.

Other shocks can be made to fit, some less work than others.

Many people seem to think that as long as it fits and it is newer then it must be better right? Certainly most of the time a newer shock will feel better than the tired old stock shock but its very important that its set up properly, valving, spring tension etc.

Depending on usage it might not make a lot of difference if you just potter around on a Sunday but a badly installed shock can make the difference between a quick lap and a crash.